Commitments and Contingencies - Additional Information (Details) (USD $) In Millions, unless otherwise specified					9 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014 Minimum [Member]	Mar. 31, 2010 Structural Products [Member] Lease	Sep. 30, 2014 Asbestos [Member] claim	Dec. 31, 2013 Asbestos [Member] claim	Sep. 30, 2014 Environmental Liability [Member]	Dec. 31, 2013 Environmental Liability [Member]
Loss Contingencies [Line Items]
Asbestos claims pending					25,000	25,000
Asbestos claims accrued					$ 80	$ 88
Time horizon used to estimate liability					15 years
Probable recovery receivable					50	55	1	1
Approval Amount For Dividends And Other Distributions			1
Other product liabilities, non-asbestos	1	1
Accrued environmental liabilities							8	9
Guarantee of lease obligations, number of leases assigned (in leases)				3
Guarantee Obligations Other Contracts				$ 6